Hugh Pickens writes writes: "AFP reports that Amazon.com founder Jeff Bezos plans to retrieve the F-1 engines that rocketed astronaut Neil Armstrong and his crew toward the moon in 1969. "We're making plans to attempt to raise one or more of them from the ocean floor," Bezos wrote in his blog at BezosExpeditions.com. "We don't know yet what condition these engines might be in — they hit the ocean at high velocity and have been in salt water for more than 40 years. On the other hand, they're made of tough stuff, so we'll see." Bezos wrote that he was five years old when Armstrong made history during the Apollo 11 mission by becoming the first person to set foot on the moon and "without any doubt it was a big contributor to my passions for science, engineering, and exploration." Bezos stressed that he is using private funds to try to raise the F-1 engines from their resting places 14,000 feet (4,267 meters) below the surface of the Atlantic Ocean and that they remain the property of NASA. "I imagine that NASA would decide to make it available to the Smithsonian (National Air and Space Museum) for all to see." Bezos's efforts come just days after Titanic director James Cameron became the first person in 40 years to descend to the bottom of the Mariana Trench, the ocean's deepest point, in a privately-funded expedition."

How exactly would NASA go about asserting a property claim on items they abandoned in international water?
I guess they might be able to get away with it in the US but nobody else would be obligated to respect their claim under international law.